Snap fastener



Jan. 31, 1933. Mf F. CARR 1,896,044

SNAI FASTENER Filed Jan. 18, 1930 2 Sheets-Sheet l Mami?" am? by @gna/WVM c/iry M. F. CARR sNA? FASTENER Jam.' 31, T1933.

Filed Jan. 18, 1930 2 Sheets-Sheet Z Impaoa@ Mae@ ECW# Patented Jan. 3l, 1933 n [UNITED .STA-Tas PATENT ori-ics MosEs F. om, or LEXINGTON. MASSACHUSETTS, Assioma fro UNITED-GARR EASTENEB oonrom'rromor CAMBRIDGE, .MAssAcnusETfrs A coBroRATloNoF f MASSACHUSETTS .SNAP Y:rAsmnnisa Application filed 'January.18, .Serial No. 421,756.

My invention 4aims to provide improvements in separable fastener members. Y In the drawings which illustrate preferred e yembodiments of my invention z- Figure 1 is a part section 'and part elevation of a `resilient ystu-d installation showing thestud secured lto the 4carry-'ing medium by means of a tack;

Fig. -2 includes a plan and a side Ielevation of the stud member shown in Fig. 1;

Fig. 3 is asection similar to the one illus'- `trated by Fig. 1, Aexcept that `the rolled edge vof the 'base of the stud member Vis omitted;

Figs. 4 and 5 are sections tafken Ithrough modified forms .of studs showing the vfolded over Vportion of the base located at lthe top side of `the 'base instead of `at the bottom side, as shown in Figs. l Iand 2, and Ashowinggthe yieldable portions formed integral with the folded over. portion; and

Fig. 6 includes `a plan and side elevation .of-the stud member shown in Fig. 4. .y

Throughout the drawings 'like .numerals will "be usedtoindicate like parts. y

' Referring' to ytheembodiment .of my `'invention illustrated in 1 and '2, havesh'own ,a snap fastener (Fig- 1) secured to a flexible .carrying medium 1 by means of a ktack 2.

lThe same general ideas maybe followed in `connection with a .socket instead -of Aa stud in all ythe embodiments of invention illustrated,

the changes being in the formation of the annular walls, as will vbe apparent to anyone slilledin the art.

The stud member (Figs. 1 and 2) which I have selected for illustrative purposes is pressed from a single .sheet of metal and has a base portion 3 from which is pressed an upwardly projecting annular wall flared outwardly lto provide a neck 4 vand .a head 5. The center ofthe head is pressed' downward- 1y to provide a. cup-shaped portion 6 surrounded by the annular wall which provides the neck and head of the stud, as best illustrated in Fig. l. The bottom 7 of the cupshaped portion 6 is pressed out to provide an aperture 8 above which is provided a dome 9 for receiving and clenchingthe shank of the tack 2 or other attaching element.

rlhewvalll 10 of the cup-shaped portieri 6 and the 'Wall 'which provides the neck-and head ofthe vstufd vare divided by a number of slits 1i which have their ends Aterminating inthe bottomT-of thecu-p-shaped portion and in the'base 3 of the stud, vas illustrated '-'rn Figs. 1 and 2. These s-lits kper-mit contraction and expansion ofthe head '5 for engagement Vwith Vand disengagement from a cooperating socket.

Stufdrnembers of the type above-described may be secured -to the carrying medium "1 by means of a tack2 -or other element of 'wellknown vvcon struction inthe lmanner illustrated Fig. l. Dui-ling attachment, 'the shank A1'2 of the"v attaehing'element is '.Eorced 'through the carryingmedium 1 andis guided .through the aperture 8 by the 4wall portion 9 inte the cupshapedfportii 6 where the `protruding end is upset curveddome.9;yk p

The ldome 9"is of 'importance because it conceals the upsetportion of the 'shankpof the attaching element and affords a neat 4appea'rzn-ice to 'the fastener.

Art the periphery of the base 3 I have provided a flange 13 which is located beneath and .in spaced relation to the jbase. ilafnge has two useful purposes. First, it exerts a pressure on the -ca-rryin medium `1 and grips agportion of it tightly tween 'the flange and 'the cap or -head of the taclk v2, as yclearly shown in Fig. 1. Second, it spaces thebase 3 from -the-carrying'medium 1 there- Aby leavingthose portions of the lbase, be-

tween the slits 11, free to yield toward l'the and clenched by the generally 'carrying y'medium without interference when the head of the 'stud is contracted.

, In F ig. 3 I'have illustrated an installation 'which is substantially the same as in 1Fig. '1. In this instance, however, I have eliminated the Hange 13 beneath the -base to show that Y itl isr not absolutely essential toi-space lthe base 3 .from `the carrying medium, although "it is desirable.

VReferring now to the embodiment of my invention illustrated yin Figs. 4 'through v6, l

but constructed in a substantially different manner. Instead of bending the flange 13 under the base 3 I have bent it inwardly over the base so that that base ma present a smooth continuous surface per orated only by the tack-receiving aperture 8. Thus the base 3 may be in contact with the carrying medium 1 throughout its entire surface, as shown in Figs. 4 and 5.

The `two walls which provide the socketengaging portion of the stud are formed as a continuation of the flange or connecting portion 13. However, the wall 10 terminates in a free edge spaced from the base 3 and yields with the wall which provides the head and neck. By arranging the walls as shown in Fig. 4 there is provided a more readily yieldable head which is less apt to be come set because there is no resistance set up by the wall 10. Furthermore, the flange or connecting portion 13 is spaced from the base so that the slits 11 may divide the flange or connecting portion 13 and provide longer yieldable portions which are not interferred with by the base 3.

In Fig. 5 I have shown the same type of fastener as that illustrated in Figs. 4 and 6, but with the iiange or connecting portion 13 and base 3 in contact. This fastener is a commercially operable one, but the yielding portions are more stiff and have a greater tendency to become set than is the case with the stud shown in Fig. 4.

, While I have illustrated and described preferred embodiments of my invention, I do not wish to be limited thereby, because the scope of my invention is best defined by the following claims.

I claim:

1. A snap fastener member formed entirely from a single piece of metal and comprising a base portion, a pair of annularly arranged connected walls extending at substantially right angles with relation to said base portion and at least one of which is secured thereto, means permitting yielding movement of said walls when engaged with and disengaged from a cooperating snap fastener member, means provided by one of said walls for maintaining engagement with a cooperating fastener member and a dome-shaped attaching portion formed as a part of said fastener member and surrounded by said walls and open at one side only to receive an attaching element to be upset within said dome-shaped portion, said dome-shaped attaching portion presenting a curved surface toward said opening.

' 2. A snap fastener member comprising a base portion perforated only by a relatively small aperture to permit passage of the shank of an attaching element, a pair of connected annularly arranged walls extending at substantially right angles with relation to said base portion and one of which is secured thereto, the other of said walls having a free edge terminating between the outer edge of said walls and the said base portion, means permitting yielding movement of said walls when engaged with and disengaged from a cooperating snap fastener member, means provided by one of said walls for maintaining engagement with a cooperating fastener member and a dome-shaped attaching portion formed from said base and surrounded by said walls and open at one side only to receive an attaching element to be upset within said dome-shaped portion.

3. A snap fastener stud member having a base portion, a. wall extending from said base portion and flared outwardly to provide a head and a neck, a second wall connected to and encircled bysaid first mentioned wall and having a free edge terminating in spaced relation to the base portion, said walls being divided by slits to permit contraction and expansion of the stud head, and a domesha ed portion formed from said base and encircled by both walls and providing means for receiving and clenching an attaching element.

4. A snap fastener member comprising a base portion, a pair of annularly arranged connected walls extending at substantially right angles with relation to said base portion, means permitting yielding movement of said walls when engaged with and disengaged froln a cooperating snap fastener member, means provided by one of said walls for maintaining engagement with a cooperating fastener member and a dome-shaped attaching portion formed as a part of said fastener member and surrounded by said walls and open at one side only to receive an attaching element to be upset within said dome-shaped portion and a connecting portion extending inwardly from the periphery of said base to the lower edge of one of said walls thereby connecting said wall to said base to form a single unit.

5. A snap fastener stud member having a base portion, a wall extending from said base portion and flared outwardly to provide a. head and a neck, a second wall connected to and encircled by said first mentioned wall and having a free edge terminating adjacent to said base portion and a dome-shaped portion formed from said base and encircled by both walls and providing means for receiving and clenching an attaching element.

In testimony whereof, I have signed my name to this specification.

MOSES F. CARR.

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